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Analysis method of grain size in the grain structure of conglomerate core

A core and particle technology, applied in the field of oil and gas exploration and development, can solve the problem of not being able to accurately characterize the particle size characteristics of conglomerate

Active Publication Date: 2014-10-08
东营市大学科技园发展有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned problems that the existing clastic rock particle size analysis method cannot accurately characterize the particle size characteristics of conglomerate, and provides a method for analyzing the particle size in the particle structure of the conglomerate core

Method used

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  • Analysis method of grain size in the grain structure of conglomerate core
  • Analysis method of grain size in the grain structure of conglomerate core
  • Analysis method of grain size in the grain structure of conglomerate core

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Embodiment Construction

[0022] The specific technical scheme of the invention is illustrated by the calculation method of conglomerate grain structure in a certain area of ​​Shengli Oilfield.

[0023] A method for analyzing grain size in a conglomerate core grain structure, the specific steps are as follows:

[0024] (1) For the gravel particles with a diameter greater than 2mm in the conglomerate core, with the help of transparent paper, use the method of manual sketching to fine-tune the core at 1:1, and then use the CorelDRAW X4SP2 drawing software to clear and draw the gravel-level particle image (such as Figure 5 shown), and then use the CorelDRAWX4SP2 image analysis software to obtain the area SAi of each gravel, its equal-area circle diameter Di, and the total core area S, and sum the areas of each gravel to obtain the total area SA of the gravel. Table 1 shows the particle size data table of a conglomerate core gravel particle 1:1 fine tracing analysis.

[0025] The formula for calculating ...

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Abstract

The invention relates to the field of oil and gas exploration and development, and provides an analytical method for the particle size in a conglomerate core particle structure. The method combining conglomerate core macroscopic finely described image analysis with representative region microcosmic slice image analysis is adopted. Features of the particle size in the conglomerate core particle structure are accurately acquired, used for analysis of the physic-geographical environment and hydrodynamic conditions during conglomerate deposition, also used for research of original accumulation physical properties of conglomerate reservoirs and evolution laws of accumulation physical properties during a burial process, and then used for giving guidance to oil and gas exploration and development.

Description

technical field [0001] The invention relates to the field of petroleum and natural gas exploration and development, in particular to a method for analyzing the grain size in the grain structure of conglomerate cores. Background technique [0002] The clastic rock structure refers to the characteristics and interrelationships of each structural component in the clastic rock, including particle structure, matrix and cement structure, pore structure, and the relationship between clastic particles and matrix and cement. The grain structure of clastic rock includes grain size, roundness, sphericity, shape, sorting property and grain surface structure. The grain size characteristics (size and distribution) in the grain structure of clastic rocks are the basis for classification and naming of clastic rocks, and also the basis for determining the sorting properties in the grain structure of clastic rocks. Grain size characteristics and sorting in clastic rock grain structure are im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/02
Inventor 操应长王艳忠马奔奔葸克来刘海宁齐明明杨田
Owner 东营市大学科技园发展有限责任公司